Fastcat, how do you restore them? mine is very complete but stained very brown, almost like oil soaked look?
Thanks
SuperCJcat, I have taken a small pan the size of the build sheet and used wax and grease remover that you can buy at the paint store, put your build sheet in the pan and soak it in the wax and grease remover until it comes as clean as it will get, then take it out an dry it on paper towels. The oil soaked is from the underlayment, if your sheet is from rust,this won't help much.